EFO distributes a range of Analogue and Digital Insulation Resistance Testers. Especially designed for the Electrical Trade and Utility applications. Without a doubt you will get the best value and quality for money. Our Analogue and Digital Insulation testers voltage ranges include 250V/500V/1000V. All have Low Ohm functions for electrical resistance testing. All of our Insulation Resistance Testers can be issued with a Test Report or Calibration Certificate. In Addition for higher Voltages we offer the Sanwa High voltage 5KV Digital Insulation resistance tester. Used in measurement of Insulation Resistance of a power line and power equipment within the range of CAT IV 600V. Furthermore we select with best quality and value products. Consequently Saving you time on confusing options.